Improve CSS HMR in RSC Framework Mode

[markdalgleish]

This doesn't get us to 100% support, but this solves a number of issues and ensures the tests are passing against the fixes:

• Updated @vitejs/plugin-rsc to fix an issue where it was removing link tags during HMR if they were rendered by our Links component.
• Cloned serverResponse to detect redirects to fix an issue where CSS was missing on page load in dev when using floated link tags.
• Updated vite-css-test.ts so that we're running all passing test cases with comments explaining what's left to fix.

[changeset-bot]

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Latest commit: ef90a84

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[hi-ogawa]

For vanilla extract, we found a user land workaround https://github.com/pawelblaszczyk5/vite-rsc-experiments/blob/643649f2e6562c859d9612126bfc3a183e03c7b5/apps/vanilla-extract/vite.config.ts

I'm not sure yet whether rsc plugin should handle this in some general way or vanilla extract plugin should adjust it somehow.

[github-actions]

🤖 Hello there,

We just published version 7.9.0-pre.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 7.9.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!